Diff: main.cpp

Revision:

0:54a12c4b19c2

Child:

1:18f5ba9fb718

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Sep 13 06:18:59 2016 +0000
@@ -0,0 +1,154 @@
+// Basic example show how to read a tag uid.
+// you can use i2c, spi, hsu interface.
+//
+// Assembled by dotnfc as Arducleo Sample
+// 2016/09/10
+
+
+
+#include "mbed.h"
+#include "PN532.h"
+#include "PN532_HSU.h"
+#include "PN532_SPI.h"
+#include "PN532_I2C.h"
+
+DigitalOut ledBrd (LED1);   // arducleo onboard led
+
+DigitalOut ledNFC (D9);     // status led
+
+DigitalOut rstNFC (D4);     // pn532 chip reset control
+
+PwmOut buz(PB_1);
+
+Serial pc(SERIAL_TX, SERIAL_RX);
+
+// ----------------------------------------- HSU
+//HardwareSerial pn532_hsu (PC_10, PC_11);
+//PN532_HSU pn532_if (pn532_hsu);
+
+// ----------------------------------------- SPI
+SPI pn532_spi (SPI_MOSI, SPI_MISO, SPI_SCK);
+PN532_SPI pn532_if (pn532_spi, SPI_CS);
+
+// ----------------------------------------- I2C
+//I2C pn532_i2c (I2C_SDA, I2C_SCL);
+//PN532_I2C pn532_if (pn532_i2c);
+
+
+
+PN532 nfc(pn532_if);
+
+/*==============================================================================
+ * \brief reset the pn532 chip
+ */
+void reset_chip (void)
+{
+    rstNFC = 0;
+    wait_ms (100);
+    rstNFC = 1;
+}
+
+
+/*==============================================================================
+ * \brief init the peripheral
+ */
+void setup(void)
+{
+    ledBrd = 0;
+    ledNFC = 0;
+    reset_chip ();
+
+    uint32_t versiondata = 0;
+    pc.baud(115200);
+    pc.printf ("Hello!\n");
+
+    while (1) {
+        nfc.begin();
+        //nfc.SAMConfig();
+        versiondata = nfc.getFirmwareVersion();
+        if (! versiondata) {
+            pc.printf("Didn't find PN53x board\n\n");
+            wait_ms(500);
+        } else {
+            break;
+        }
+    }
+
+    // Got ok data, print it out!
+    pc.printf ("Found chip PN5%02X , Firmware ver. %d.%d\n",
+               (versiondata>>24) & 0xFF,
+               (versiondata>>16) & 0xFF,
+               (versiondata>>8) & 0xFF);
+
+    // Set the max number of retry attempts to read from a card
+    // This prevents us from waiting forever for a card, which is
+    // the default behaviour of the PN532.
+    nfc.setPassiveActivationRetries(0xFF);
+
+    // configure board to read RFID tags
+    nfc.SAMConfig();
+
+    pc.printf ("\nWaiting for an ISO14443A card\n");
+}
+
+
+/*==============================================================================
+ * \brief find a tag
+ */
+void loop(void)
+{
+    bool success;
+    uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 };  // Buffer to store the returned UID
+    uint8_t uidLength;  // Length of the UID (4 or 7 bytes depending on ISO14443A card type)
+
+    // configure board to read RFID tags
+    nfc.SAMConfig();
+
+    // Wait for an ISO14443A type cards (Mifare, etc.).  When one is found
+    // 'uid' will be populated with the UID, and uidLength will indicate
+    // if the uid is 4 bytes (Mifare Classic) or 7 bytes (Mifare Ultralight)
+    success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, &uid[0], &uidLength);
+
+    printf ("\n");
+
+    if (success) {
+        tone (buz, 800);        // turn on the buzzer
+        ledNFC = 1;             // led on
+
+        pc.printf("Found a card!\n");
+
+        pc.printf("UID Length: %d bytes\n", uidLength);
+        pc.printf("UID Value: ");
+
+        for (uint8_t i=0; i < uidLength; i++)
+            pc.printf(" 0x%02X", uid[i]);
+
+        pc.printf("\n");
+
+        wait_ms (100);
+        tone (buz, 0);          // turn off the buzzer
+
+        // wait until the card is taken away
+        while (nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, &uid[0], &uidLength, 500)) {}
+
+        ledNFC = 0;         // led off
+    } else {
+        // PN532 probably timed out waiting for a card
+        pc.printf("\nTimed out waiting for a card\n");
+        ledNFC = 0;
+        wait_ms (200);
+    }
+}
+
+
+/*==============================================================================
+ * \brief main entry
+ */
+int main()
+{
+    setup();
+
+    while (1)
+        loop ();
+}
+